Draft-operated scraper



June 10, 1930. F. v. HICKS I l DRAFT OPERATED SCRAPER 2 Sheets-Sheet l Filed July l5, 1925 NN k 9m) QN mm www ll Smmv @n H HHHNIIIH NNI NWN mm OMWN @N mw d WN mm, QN, W Om,

MN NN NNI vJune 1o, 1930. F.V.H1Ks 1,762,334

lDRAFT OPERATED SCRAPER Fi led July l5. 1925 42 Sheets-Sheet 2 fmff `17 and a tail rope 18.

Patented June 10, 1930 UNrrEn STATES PATENT orifice V. HICKS,`OF ROCK SPENGS, WYOMING, ASSIGNOR TO GOODMAN MANUFAC- TUBING COMFANY, OF CI-ICAGO, ILLNOIS, A CRPORATION OF ELLINOIS DRAFT-OPERATED SCBAPER Application led July 15,

This invention relates to` improvements in draft operated scrapers and more particularly to reciprocable Scrapers adapted for gathering loose material. y

The principal object of this invention `is to pro-vide means in connection `with the scraper for producing aline of draft at various points offset from the normal centre line of draft whereby the scraper may be more easily maneuvered` to gather loose material from the sides of a pile of material.

A further object is to provide means for quickly releasing the offset draft arrangement whereby the scraper may bedrawn forwardly in a. normal manner after it loaded with the draft applied on substantially its longitudinal axis. i y i l The invention may be best understood by reference to the accompanying drawings, in which: i i

.i Figure l is a top view of a scraper constructed in accordance with my invention;`

Figure 2 is an enlarged sectional view taken on line 2-2 of Figure l;

Figure 3 is an enlarged detail view of the drawhead of the scraper. y

Referring now to the details shown in the drawings, the scraper comprises a body portion having side walls 1l, 11 and a rear wall 12. The side walls are connected adjacent their forward ends by a drawhead which in the form shown comprises two parallely disposed bars 16, 16, as shown in Figure 2. ln the preferred form illustrated the scraper is bottomless but it may be provided with a bottom, if desired.

The draft devices comprise a head rope These ropes are tra-ined over suitable guides for moving the scraper reciprocably in the usual manner. The head rope 17 is attached to an arm 2O which is pivotally connected at its rear end to a pin 2l extending vertically through the cross bars 1G. lThe pin 2l is secured to move with the arm 2O and has a ratchet device 24 connected thereto. In the form shown said ratchet device is mounted above the upper bar 16 and adapted to be engaged by one of a pair of pawl devices 25. Each of said pawl devices is arranged to be moved into 1925.` Serial No. 43,694.

engagement with the ratchet wheel 2li when the arm 20 is swung away from said pawl in the direction of the opposite side of the scraper. In suchia case the pawl nearest the arm is maintained out of operative engagement with said ratchet. Suitable means are provided for moving either of the pawls into and out of engagement as desired. In the form shown this means comprises a bolt 26 passing through the arm 25il of each of thepawl devices 25, said bolts each having compression springs 27, 27, engagingtheir rearside of said arm "L and a head 28 at the forward end thereof adapted to be detachably engaged in a notch 29formed in an upwardly extending flange 3() as best shown in Figures 2 and 3. As shown in Figures l and 2 the right hand bolt 26 is out of engagementwith its associated bracket while the left hand pawl is in cooperative engagement as shown, with the pawl 25 maintained under compression of its spring 27 so as to engage the ratchet 24. Suitable means for tripping or disengaging the pawl are provided. In the form shown this means comprises the arms 30a, 30, on extended pivot pins 31 adapted to` rotate with the pawls 25. i A tripping cord 32 may be connected with the lever 30, in the form shown being connected with the right hand pawl and` extending rearwardly through an eye 83 on the rear end of the scraper whereit may be readily manipulated. In` con junction with the head rope 17 and its attachment adapted to swing with the draft arm 20,iis provided an auxiliary flexible rope or cable connected to the forward end of said arm and extending rearwardly over suitable guide devices arranged along one side,i of the scraper, and is con nccted at its rear end to the tail rope l8at a suitabledistance in rear ofthe scraper by any suitable means, said means herein being preferably shown as U bolt clamps 39, 39. This auxiliary cable is placed over its guides on either the right or left hand side of the scraper as desired and serves to swing the arm 2O into the operative position shown in full lines in Figure l when the scraper is pulled rearwardly by means of the tail rope.

The point of connection of the cable 35 to the tail rope 18 may be adjusted by changing the position o-f the U bolt clamps on the tail rope 18 as to regulate the swing of the arm 20. The apparatus is then in position to gather a load. After a load has been gathered the pawl 25 is released by pulling the cord 32, the head rope under pressure swings the arm 20 around to normal (dotted) positionand the tail rope is slackened to allow the auxiliary cable 35 to assume the position shown in dotted lines in Figure 1. The cable 35 may also be placed through guides 36 at the opposite side of the scraper in the position shown in dotted lines 37 fo-r the purpose of digging in or gathering a load Vfrom the corner of a room or working space. When so placed, and the arm 20 held by the pawl 25, pressure may be applied on beth the head and tail ropes which will cause the scraper to turn within its own length much as though it were on a pivot at its centre point. A further steady pull on the head rope with a correspondin slackening on the tail rope will enable the scraper to dig in or gather a load from a co-rner.

It will be noted further that the position of the arm 20 may be automatically changed to a predetermined angle relative to the scraper each time the scraper is drawn rearwardly by thev tail rope 18, which angle depends upon the length of the auxiliary cable 35. Thus, with the length of the auxiliary cable shown in Figure 1 the arm 20 will be swung to an extreme position Atoward one side wall of the scraper when draft is applied to the tail rope during its rearward movement and the spring pawl 25 will auto-` matically hold said armV in this position during the next succeeding forward draft of the scraper through the head rope 17 until the pawl 25 is released. It is manifest however, that the position in which the arm 20 is thus automatically placed may lbe varied either. by lengthening the auxiliary cable 35 or by adjusting the position of attachment of said cable to the tail rope 18.

While I have shown herein and described one form of my invention, I do not wish to be limited to the precise details of construction or arrangement of parts herein shown and describedexcept as specifically limited in the appended claims.

VI claim as my invention: Y

1. A draft operated scraper having head and tail ropes, a head 'rope connection therefor including a pivotally movable member mounted on said scraper, and a flexible connection between said member and said tail rope for positioning said member in a predetermined position relative to said scraper.

2. A draft operated scraper having head and' tail ropes, a head rope Yconnection therefor including a pivotally movable member mounted on said scraper, and an adjustable flexible connection between said member and said tail rope for positioning said member in a plurality of predetermined positions relative to said scraper.

3. A draft operated scraper having head 'and tail ropes, a head rope connection there- {for including a pivotally movable member mounted on said scraper, a flexible connection between said member and said tail rope for positioning said member relative to said scraper, and means for automatically locking said member in a plurality of positions.

4. A draft operated scraper having head and tail ropes, a head rope connection therefor including a pivotally movable member mounted on said scraper, an adjustable flexible connection between said member and said said tail rope for positioning said member in a plurality of predetermined positions relative to said scraper, and compression means for automatically locking said member in any one of said positions.

5. A draft operated scraper having head and tail ropes, a head rope connection there- `for including a pivotally movable member mounted on said scraper, a flexible connection between said member and said tail rope for positioning said member in a predetermined position relative to said scraper, and means for automatically locking said member in such predetermined position, said flexible connection being disposable to either side of said scraper.

Signed at Rock Springs, in the county of Sweetwater and State of lVyoming this 19 day of June, A. D. 1925.

FRANK V. HICKS. 

